Professional Trailer Safety Chain Manufacturer
Tuohai’s trailer chains offer exceptional mechanical performance and versatility. We use high-quality materials, including carbon steel, stainless steel, and alloy steel, and apply superior surface treatments. Even in harsh environments, our trailer chains maintain stable mechanical properties, ensuring the highest level of safety for your needs.
What is a Trailer Chain?
Trailer chains, also known as trailer safety chains, are essential components that connect the trailer to the towing vehicle. Their primary purpose is to prevent the trailer from separating from the tow vehicle in case of hitch or connection failure, thereby helping to avoid potential accidents. In many regions, the use of trailer safety chains is legally required, especially when towing larger trailers or RVs.
Trailer chains generally consist of the following components:
- Chain: The chain is typically a welded chain made from high-strength steel, such as high-carbon steel, stainless steel, or alloy steel. These materials offer excellent strength, wear resistance, and durability, ensuring safety during towing.
- Connectors: Both ends of the chain typically have hooks or connecting rings to secure the chain between the trailer and the tow vehicle. These connectors must be strong enough to withstand the forces generated during towing.
Trailer safety chains must often meet specific safety standards and regulations. For instance, in Australia, safety chains must display the appropriate Grade 4177 markings and the manufacturer’s ID number. In New Zealand, the chains and shackles are required to bear NZS 5467 and MTM2.5 markings. These labels certify that the chains comply with the necessary safety standards.
Additionally, chains are designed to be stronger and more tear-resistant than straps, which is one reason professionals prefer chains over straps.
When using trailer safety chains, it is generally recommended to use at least two chains, arranged in an “X” pattern under the hitch and coupling. This setup provides additional stability and safety, as one chain can act as a backup if the other fails.
For other material, size, or application requirements, we also supply Safety Chain and Tow Chain.
Trailer Chains By Grade
Tuohai’s advanced production lines can manufacture trailer chains of various grades. Whether for trailers, towing, or other applications, Tuohai provides the perfect trailer chain to suit your needs with the highest safety standards.
The most common grade, ideal for standard trailer applications with light to moderate loads.

Offers excellent mechanical performance, suitable for medium to heavy-duty trailer applications.

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Outstanding strength and wear resistance for heavy-duty applications, ensuring superior safety.
Trailer Chains By Material
Tuohai’s trailer chains can be customized with various materials, such as carbon steel, alloy steel, and stainless steel, to meet your specific needs. Combined with Tuohai’s advanced surface treatment processes, our chains adapt seamlessly to diverse application and environmental requirements.
Superior Mechanical Performance
Tuohai trailer chains are crafted from top-grade materials, including carbon steel, stainless steel, and alloy steel, all undergoing rigorous quality testing. Our chains exceed various international standards and can be used for direct trailer and towing connections or as backup connections. They are also ideal for safety chain applications, such as securing and binding in transportation.


Wide Range of Applications
Tuohai provides the right trailer chain for your specific needs and applications:
- For trailers
- For towing
- As a safety chain
- For securing and binding during transportation
Enhanced Safety Features
Tuohai offers various safety accessories for your trailer chain, including hooks with latches, pins, channel shackles, and spring clips, which can be connected to the hitch more conveniently, effectively preventing accidental unhooking during use, increasing stability during use, and protecting the safety of users.

Why Choose Tuohai Trailer Chain


Customized manufacturing suitable for all types of users. Whether you are a distributor or a factory, Tuohai provides trailer chains tailored to your required length, standards, and connection accessories.
We manufacture trailer chains according to a variety of standards, such as ISO, EN, AS/NZS, and CSA standards, to meet the diverse needs of customers worldwide.
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Tuohai trailer chains come with advanced surface treatments, including hot-dip galvanizing and electro-galvanizing, ensuring long-term durability and stable mechanical performance even in harsh outdoor environments. Tuohai can also customize surface treatments and colors for your trailer chains, improving visibility and enhancing safety.

Tuohai also offers heat treatment for trailer chains, greatly enhancing their mechanical properties for applications with high safety requirements. Additionally, Tuohai can provide heat-treated S hooks and spring hooks to further improve safety during use.
- Various Accessories
- Various Standards
- ISO Standards, e.g., ISO 2415
- EN Standards, e.g., EN 818
- AS/NZS Standards, e.g., AS/NZS 4344
- CSA Standards
Additionally, Tuohai offers trailer chains in non-standard dimensions or standards, ensuring the right solution for every need.
Related Product
How to Attach Trailer Chains?
Trailer chains are an essential part of the towing process. While they may seem like a small detail, they are crucial for ensuring safety. Connecting safety chains correctly not only ensures a secure connection between the trailer and tow vehicle but also protects you in case of a failure of the primary connection. This article will explain how to connect trailer chains properly, step by step, to ensure safe towing every time.
The Role of Trailer Chains
The main role of trailer chains is to keep the connection between the trailer and the tow vehicle. If the primary connection system, such as the hitch ball or coupler, fails, the safety chains will help guide the trailer and bring it to a stop, preventing it from detaching completely.
In simple terms, trailer chains are designed to prevent the trailer from becoming detached from the tow vehicle, acting as a safety backup.
Steps of Connecting Trailer Chains
Connecting trailer chains is not difficult, but it requires attention to detail. Here are the detailed steps to follow to ensure a safe and secure connection.
Step 1: Prepare the Chains
Before starting, make sure you have two suitable safety chains. Each chain should have a strength rating equal to or greater than the combined weight of the trailer and its load. Trailer chains typically come in different classes such as Class 1 (2000 lbs), Class 2 (3500 lbs), Class 3 (5000 lbs), etc. Choose the appropriate chains according to the weight of your trailer.
Also, inspect the chains and all their components, such as hooks and latches, to make sure they are in good condition. Avoid using old or rusted chains, as weak or damaged chains can fail under load.
Step 2: Cross the Chains and Leave Enough Slack
The key to properly connecting the chains is to cross them underneath the hitch and coupler, leaving enough slack for turning and movement. Cross the chains under the trailer’s hitch to allow flexibility.
Why Cross the Chains?
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In case of a failure of the primary connection, crossing the chains prevents the trailer tongue from touching the ground, which could lead to loss of control.
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Crossing the chains also helps prevent the trailer from swaying side to side, keeping the towing system stable.
At the same time, ensure the chains have enough slack so that they can move freely when turning. Too tight, and the chains might restrict turning; too loose, and they could drag on the ground, which is unsafe.
Step 3: Secure the Chains to the Tow Vehicle
Once the chains are crossed under the hitch, connect each chain to the tow vehicle. Make sure the chains are attached securely to the tow vehicle’s designated chain attachment points, usually chain retainers or specific connection rings.
Key Points:
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Each chain should be connected individually, not to the same point. This allows the chains to distribute the load evenly, preventing one chain from being overloaded.
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Use appropriate locks or fasteners to secure the connection and ensure that the chains are firmly attached.
Step 4: Check the Security of the Connection
After connecting the chains, gently shake or tug on them to ensure they are securely attached. Always check that the chains are tight and properly positioned before you move the tow vehicle and trailer.
It is recommended to stop and check the chains’ security every hour during long trips to ensure they remain in place.
Step 5: Regularly Inspect the Chains for Wear and Tear
Trailer chains undergo constant friction and stress during towing, so they need to be inspected regularly for any signs of wear, cracks, or corrosion. If you notice any damage, replace the chains immediately to avoid failure during towing.
Before every journey, check the chains’ condition and ensure they are in optimal working order. Regular checks are important for maintaining towing safety.
Tips for Using Trailer Chains
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Avoid Letting the Chains Drag on the Ground
Ensure the chains have enough slack to allow movement, but do not let them drag on the ground. Dragging chains not only damages them but also affects the stability of the trailer, increasing the risk of accidents. -
Do Not Attach the Breakaway Lanyard to the Safety Chain
Some towing systems might have a breakaway lanyard, but never attach it to the safety chain. The breakaway lanyard should be used separately and attached to its own designated point. -
Do Not Attach the Chains to the Hitch Ball or Other Parts
Always connect the chains to the designated attachment points on the tow vehicle. Never attach them to the hitch ball or any other part unless explicitly stated by the manufacturer. -
Perform Regular Maintenance
Regular maintenance is crucial for trailer chains. Periodically check the condition of the chains and their attachment points. If any part of the chain shows signs of damage, replace or repair it immediately to maintain towing safety.
Conclusion
Connecting trailer chains is a necessary and simple process, but it plays a vital role in ensuring the safety of the trailer and tow vehicle. By following the steps outlined above and performing regular checks, you can reduce the risks of towing accidents and ensure smooth and safe journeys.
At Tuohai, we provide high-quality trailer chains to help keep your towing experience safe and reliable. Always check your trailer’s owner’s manual and follow the manufacturer’s recommendations for securing the chains.
Happy and safe towing!























